I've been asked a lot lately if tennis is clean or not. I don't know any more how you judge whether a sport is clean. If one in 100 players is doping, in my eyes that isn't a clean sport.

I listen to my iPod as I walk on. If I'm winning I'll listen to the same song, that's like a good luck thing - usually The Black Eyed Peas' Let's Get It Started.

A believer may pass through much affliction, and yet secure very little blessing from it all. Abiding in Christ is the secret of securing all that the Father meant the chastisement to bring us.

One of the worst things sin did for man was to make him selfish, for selfishness cannot love.

It becomes tricky, and you start to think about the cramps rather than just actually what you're trying to do on the court, which is obviously win the match.

People think I am unemotional because my voice is flat and a bit boring. It is unfortunate but it is just the way it is. I've tried to change it but it doesn't seem to make a difference. The truth is, I have lots of emotions inside. I cried after the semi-final at Wimbledon [2012] because I was proud to reach the final and I knew how much it meant to the country. I cried after the [losing] final [to Federer], too, for different reasons. I felt I had let people down. I think people warmed to that. They could see how much it hurt.

I am sure that there are many Christians who will confess that their experience has been very much like my own-that we had long known the Lord without realizing that meekness and lowliness of heart should be the distinguishing feature of the disciple, as they were of the Master. Such humility is not a thing that will come on its own. It must be made the object of special desire, prayer, faith and practice.